Pennington Mattresses Details

Well-suited to main or master bedrooms, the Sealy Pennington Ortho king-size mattress is large enough for two adults to sleep comfortably side-by-side or for one to stretch out and enjoy its generous proportions.

Whether you’re a front, back or side sleeper, you’ll wake up feeling refreshed thanks to a network of Sealy PostureTech springs deep down in the mattress, providing quality support from edge to edge.

Featuring firm foam and topped with a luxurious layer of pillowy quilting, this king-size Pennington Ortho mattress will mould to your body and make you feel cosy and warm every night.

As an assurance of this mattress's quality, it comes with a 5-year guarantee.

Our mattresses are fully compliant with UK Flammability Standards BS7177

All of our mattresses have been designed to fit and complement our range of solid hardwood king-size bed frames, browse the full range here.

Sealy Pennington Ortho Pillowtop King-Size Mattress

Delivery

We have three delivery options to choose from, including Basic, Standard and Premium, each offering different features depending on your needs. You can find our full terms and conditions here. Please note that 7 day delivery is subject to stock availability and delivery postcode

Please note that the delivery fees and options shown below are based on your total basket, not per product

Basic £29.99
£29.99

What's included
- Courtesy call 30 minutes before delivery
- Your furniture will be delivered just inside your front door by our friendly two-person team
Standard £49.99
£49.99

What's included
- Delivered within 7 days of ordering (subject to stock availability and delivery postcode)
- Courtesy call 30 minutes before delivery
- Items delivered by our friendly two-person team
- Furniture placed in the room of your choice
- Choose your delivery date and change it (up to 3 working days before your booked date) if needed
Premium £99.99
£99.99

What's included
- Delivered within 7 days of ordering (subject to stock availability and delivery postcode)
- Courtesy call 30 minutes before delivery
- Items delivered by our friendly two-person team
- Furniture placed in the room of your choice
- Your furniture will be unpacked and fully assembled
- All packaging materials taken away
- Choose your delivery date and change it (up to 3 working days before your booked date) if needed

Dimension	CM	Inches
Height	25	9.84
Width	150	59.06
Length	200	78.74

Will It Fit?

Choosing the right piece of furniture for your home is a big decision. Not only does it need to look good and do the job it was made to do, but it also needs to fit.

To fit with your interior style, to fit with your home needs, and most importantly, to fit with the dimensions of your room. If the piece of furniture is near a doorway, which way does the door open? Is the item going to be restricting the route in and out of the room? Is there a radiator on the wall, or a windowsill jutting out that you need to factor in when measuring the item’s height?

Check what you can fit comfortably within your room by looking at the furniture measurements. You can find them in the Dimensions & Assembly section. Note them down and get busy with your tape measure.

The final important measurement to mention, is to ensure your new piece of furniture can fit through your front door when it gets delivered! Most items arrive assembled and boxed. The packaged item dimensions can also be found in the Packaging & Assembly section. Download our Will It Fit PDF, and follow our guide to a smooth furniture delivery.

Reviews

No reviews for this product yet

Discover more of our mattresses in real homes in our gallery

Pennington Mattresses

King-Size Mattress | PostureTech Springs - Firm

£579.99

Finance from £16.12 p/m

7 day delivery

Buy this mattress for £521.99 when purchased with a bed frame. Finance from £15 p/m*

Choose from 4 sizes:

Book video appointment

Delivery

Returns

Finance Options

†Prices displayed are based on Interest-Free Credit over 36 months, with the monthly payment amount rounded up to the nearest whole pence. To qualify for interest-free credit a minimum basket spend of £499 is required. Finance is subject to status, a credit check is required and T&Cs apply.

▵ Finance is only available to residents aged 18 or over. Subject to status and affordability. Our calculator provides an illustrative example only, of monthly repayments against the amount you wish to borrow. Should you proceed to pay via finance, exact monthly payments will be displayed prior to submission of your finance application to our lenders partners.
All finance is subject to status and credit

Oak Furnitureland Group Limited (FRN: 928005), an Appointed Representative of Consumer Credit Compliance Limited are authorised and regulated by the Financial Conduct Authority (FRN: 631736). Oak Furnitureland Group Limited trades as Oak Furnitureland. The permissions of Consumer Credit Compliance Limited as a Principal firm allow Oak Furnitureland Group Limited to undertake credit broking.
Oak Furnitureland Group Limited acts as a credit broker not a lender and will introduce you to our finance partner/s to complete your application for finance. We do not earn a fee or commission for the introduction. Late payment fees and other charges may be payable, please refer to your finance agreement for full details and T&Cs.

* Delivery - 7-day delivery on selected lines only. Subject to stock availability and based on accepting the first delivery date offered. Available dates are presented at checkout, and may vary depending on the delivery option selected.
* Lifetime Frame Guarantee - Available on sofas, sofa beds, accent chairs, armchairs, loveseats and footstools. T&Cs apply.
* Half Price Chairs - Offer is limited to up to 10 dining chairs when you buy any dining table. Dining chairs are sold in pairs.

© 2025 Oak Furnitureland. All rights reserved. Company reg. 12645185. VAT reg. GB350645607 Registered Address: Oak Furnitureland Group Ltd, Unit DC2, Viscount Way, South Marston Ind Estate, Swindon, Wiltshire SN3 4TN. Registered in England and Wales.

Chat online with our team

Enter your name (optional) What would you like to chat about?

You can request a callback from our team as an alternative

Product Code	MAT-PGT-KING
Product Title	Sealy Pennington Ortho Pillowtop King-Size Mattress
Packaged dimensions	H27 x W155 x D205cm (allow up to 5cm in variation)
Weight	29.0012kg
Number of boxes	1

Returns

Finance

Up to 3 years' interest-free credit

Your Basket